25 years of field exposure of pre-cracked concrete beams; combined impact of spacers and cracks on reinforcement corrosion
(2021) In Construction and Building Materials 286.- Abstract
The state of corrosion of three pre-cracked concrete beams was investigated after 25 years of marine exposure (atmospheric, tidal and submerged). The influence of inadequate plastic spacers was found to overrule the possible impact of bending cracks on reinforcement corrosion. Increased chloride ingress was detected in cracked areas, but very little corrosion was observed where cracks reached the reinforcement. Also, high chloride content was measured in uncracked parts of the beams, but no or very limited corrosion was observed outside spacers and a few cracks. It is hypothesised that corrosion, initiated early at weak spots (here at plastic spacers) can protect the remaining reinforcement from corrosion.
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https://lup.lub.lu.se/record/8355b947-e800-407c-81b6-c92bea0957be
- author
- Geiker, Mette ; Danner, Tobias ; Michel, Alexander ; Belda Revert, Andres ; Linderoth, Oskar LU and Hornbostel, Karla
- organization
- publishing date
- 2021
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- Cracks, Long-term marine exposure, Reinforced concrete, Reinforcement corrosion, Spacers
- in
- Construction and Building Materials
- volume
- 286
- article number
- 122801
- publisher
- Elsevier
- external identifiers
-
- scopus:85102558366
- ISSN
- 0950-0618
- DOI
- 10.1016/j.conbuildmat.2021.122801
- language
- English
- LU publication?
- yes
- id
- 8355b947-e800-407c-81b6-c92bea0957be
- date added to LUP
- 2021-03-23 09:18:48
- date last changed
- 2022-04-27 00:53:57
@article{8355b947-e800-407c-81b6-c92bea0957be, abstract = {{<p>The state of corrosion of three pre-cracked concrete beams was investigated after 25 years of marine exposure (atmospheric, tidal and submerged). The influence of inadequate plastic spacers was found to overrule the possible impact of bending cracks on reinforcement corrosion. Increased chloride ingress was detected in cracked areas, but very little corrosion was observed where cracks reached the reinforcement. Also, high chloride content was measured in uncracked parts of the beams, but no or very limited corrosion was observed outside spacers and a few cracks. It is hypothesised that corrosion, initiated early at weak spots (here at plastic spacers) can protect the remaining reinforcement from corrosion.</p>}}, author = {{Geiker, Mette and Danner, Tobias and Michel, Alexander and Belda Revert, Andres and Linderoth, Oskar and Hornbostel, Karla}}, issn = {{0950-0618}}, keywords = {{Cracks; Long-term marine exposure; Reinforced concrete; Reinforcement corrosion; Spacers}}, language = {{eng}}, publisher = {{Elsevier}}, series = {{Construction and Building Materials}}, title = {{25 years of field exposure of pre-cracked concrete beams; combined impact of spacers and cracks on reinforcement corrosion}}, url = {{http://dx.doi.org/10.1016/j.conbuildmat.2021.122801}}, doi = {{10.1016/j.conbuildmat.2021.122801}}, volume = {{286}}, year = {{2021}}, }